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- W3204201816 abstract "The fabrication of nanomaterials is a crucial issue in heterogeneous catalysis. Herein, nickel nanoparticles of different particle sizes were derived from the direct thermal reduction of a Ni-containing Ca–Al layered double hydroxide (LDH). Using various characterization methods, such as XRD, TEM, SEM, and TPR-MS, it was found that nickel precursors notably influenced the final morphology of Ni metallic nanoparticles. Ni(NO3)2 can attend reassembling of reassemble CaAl–NO3− LDH in water and facilitate the dispersion of Ni in the lamellar structure of the LDH, resulting in the formation of uniform and small Ni metallic nanoparticles (ca.4.7 nm) on CaAlOx via the rapid decomposition of Ni(NO3)2 in the reduction atmosphere. However, large Ni nanoparticles (ca.14.3 nm) were formed on the CaAlOx catalyst when NiCl2 was used as the precursor and Cl-remained on the final catalyst. The kinetic study and NH3-TPSR results further indicate that smaller Ni metallic nanoparticles enclosed by CaAlOx exhibited stronger interactions with adsorbed NH3 and facilitated the recombinative desorption of N and H atoms from the catalyst surface. Ni/CaAlOx (NO3−)-R exhibited the highest activity among the investigated samples." @default.
- W3204201816 created "2021-10-11" @default.
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- W3204201816 date "2021-11-01" @default.
- W3204201816 modified "2023-10-17" @default.
- W3204201816 title "Nickel nanoparticles derived from the direct thermal reduction of Ni-containing Ca–Al layered double hydroxides for hydrogen generation via ammonia decomposition" @default.
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- W3204201816 doi "https://doi.org/10.1016/j.ijhydene.2021.09.071" @default.
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